Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJAGUAR1994XJ6 BASEREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMTESTINGRIGHT REAR SPEED SENSOR
1994 Jaguar XJ6 Base
Right Rear Speed Sensor
1994 Jaguar XJ6 BaseSECTION Right Rear Speed Sensor
- Ensure ignition is off. Using DVOM, measure resistance between terminals No. 27 and 45 of ABS ECU connector. If resistance is 800-1400 ohms, go to next step. If resistance is not 800-1400 ohms, ensure speed sensor connector is not disconnected or damaged.
- Disconnect speed sensor connector. Measure resistance at speed sensor connector. If speed sensor resistance is not 800-1400 ohms, replace speed sensor. If speed sensor resistance is 800-1400 ohms, check wiring harness between ABS ECU and speed sensor connector for a short or open circuit. Repair as necessary. If wiring harness is okay, go to next step.
- Lift and support vehicle with right rear wheel off ground. Ensure ignition is off. Put DVOM in AC scale. Measure AC voltage between terminals No. 27 and 45 of ABS ECU connector. Rotate right rear wheel at one revolution per second. If AC voltage is .04-.1 volt, go to next step. If voltage is not .04-.01 volt, check speed sensor installation, toothed wheel for warping and cracks, and hub carrier for damage.
- Ensure ignition is off. Using DVOM, check for continuity between terminals No. 1 and 27 of ABS ECU connector. Continuity should not exist. If continuity exists, check speed sensor for a short to ground. If speed sensor is okay, check wiring harness between ABS ECU and speed sensor for a short to ground. Repair as necessary.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.